this allows video files to be played for wapapers - they loop and run
indefinitely. it is a special video object that shares the same source
across all outputs, so if you have the same video set, on 2 screens
(or desktops) then it's only decoded once and uses proxies to
ducplicate. this works in the pager too (it uses proxies).
this is for amusement and fun and ... because we can. :)
